Improvement in stop-plugs for boilers and other tubes



M. CORYELL.

STOP-PLUGS FOR BOILER AND OTHER TUBES.

N0. 189,429. Patented AprllO. 1877.

NFETERS, PHUTO-.IVTHOGRIPHEE WASHINGTON, D C.

UNITED .STATES PATENT QFFICE.

MIERS CORYELL, OF PARIS, FRANCE.

IMPROVEMENT IN STOP-PLUGS FOR BOILERS AND OTHER TUBES.

Specication forming part of Letters Patent No. 189,429, dated April 10, 1877; application tiled February 7, 1877.

To all whom t may concern:

Be it known that I, MIERs GORYELL, a, citizen of the United States, at present residing at Paris, in the Republic of France, have invented a certain new and useful Improvement in Stop-Plugs for Boiler and Other Tubes or Flues; and I do hereby declare that the following is such a description of my invention as will enable others skilletl in the art to which said invention belongs to make and use the same, reference being had to the accompanying drawing, which forms part of this specification.

Although this invention is applicable to other pipes or tubes passing through water spaces or chambers, and liable `to leakage, and is, furthermore, applicable to other purposes than the one to which it is here shown applied, the invention is more particularly designed to be used as a water-stopping plug for boiler pipes, tubes, or iiues.

The invention consists in a certain combination of a hollow tapering plug, which is forced into one end of the tube or iiue to be stopped, an inner tube extending through such tube or iiue, and secured at its one end to said plug and passing therethrough, an adjustable rod nclosed by said inner tube in its passage through the plug, an outer bulkbead fast to the outer end of said rod, an inner bulk-head near the same end thereof, and an expanding disk between said two bulkheads, all as hereinafter described.

Figure l represents a vertical longitudinal section ot' a steam-boiler in part, having my invention applied; Fig. 2, a transverse section on the line at' m; Figs. 3 and 4, face and transverse sections of a metallic disk used at one end of the plug; and Fig. 5, a vertical longitudinal section, in part, showing a modiiication of means for adjusting and tightening up the plug.

Referring, in the rst instance, or more particularly, to Figs. 1 and 2 ofthe drawing, A A are the tubeheads of a tubular steamboiler, and B is one of the smoke tubes or flues thereof, secured in said heads.

The water-stopping plug which constitutes this invention, and which may be supposed to be applied to the tube B, when leaking in one or more places between the two heads A A, is constructed in part of a tapering plug,

C, which is forced, water-tight, into one end of the tube, after the water-stopping plug or device has been adjusted to its required length. D is a disk or bulk-head, designed to occupy a position in the tube B near the firing end of the boiler. This disk or bulkhead is connected by a tube, E, with the tapering plug C. Extending through the tube E is a bolt, F, which.V serves to connect, in an adjustable manner, by means of a nut, Gr, at the plug end or head G of the device, or by means of a key or wedge, G', the plug-head C, with an outer disk, D', at the opposite end of the tube-stopping device, between which disk D' and the disk or bulk-head D is an india-rubber or other like elastic and expanding disk, I, or an expanding dished or corrugated metallic disk, l'. (See Figs. 3 and 4.)

The disks or bulk-heads D D', and interposed expanding disk I or I', constitute the one end or head of the tube-stopping plug, and the plugging device C the opposite end or head thereof.

In the application of my improved tubestopping plug, it is only necessary to adjust its two ends or heads to the required distance apart, and to insert it into the tube B, and, after forcing the plug-head C into a watertight fit with one end ot' the tube B, to tightenup the expanding disk I or I' between the disks or bulk-heads D D', by screwing up the nut G, or driving home the wedge Gr', so as to draw on the bolt F, and thereby to make a water-tight joint by the expanding disk I or I' within the tube at the tire end of the latter, or opposite end of said tube to that which is stopped by the plug-head C, or at any desired distance from the latter.

I claim- 'Ihe combination of the hollow tapering plug C, the tube E, secured at its one end to said plug and passing therethrough, the adjustable rod F, nclosed in its passage through said plug by the tube E, the outer bulk-head D', the inner bulk-head D, and the expanding disk I, the whole being arranged substantially as herein shown and described.

MIERS GORYELL. Witnesses:

A. L. HoLLEY, D. S. HINEs. 

